3-(2-acyloxyethoxyphenyl)benzofuran-2-ones for use as stabilizers
US5428162A · kind A · utility
53Cited by
4References
14Claims
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Key dates
| Filing date | Sep 20, 1993 |
| Grant date | Jun 27, 1995 |
| Priority date | — |
| Expiry date | Sep 20, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/378
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel compounds of the formula (1), ##STR1## in which R.sub.1 is hydrogen or acyl, R.sub.2 to R.sub.5 are independently hydrogen, chloro, alkyl phenylalkyl, aryl, cycloalkyl, alkoxy, alkylthio, hydroxy, amino or substituted amino, R.sub.6 is hydrogen, R.sub.7 to R.sub.10 are independently hydrogen, alkyl or alkoxy, R.sub.17 or R.sub.19 is hydrogen or alkyl, and R.sub.18 is hydrogen, alkyl, aralkyl or aryl, are described for use as stabilizers for organic materials against thermal, oxidative or light-induced degradation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.